Dolby is calling Atmos "the most significant development in cinema audio since surround sound" – and now it's coming to your home

 

Onkyo, Pioneer and Denon have all announced new AV receivers, speakers and other home cinema products capable of bringing Dolby Atmos sound in to the home.

But, what exactly is Dolby Atmos? And what do you need to get involved? Allow us to explain.

 

What is Dolby Atmos?

Dolby Atmos is a surround sound technology, developed in 2012, that expands upon the current 5.1 and 7.1 surround-sound set-ups. Rather than have speakers placed at pre-determined, traditional home cinema locations around the room or cinema, Dolby Atmos speakers are placed at points all around the room. And we mean all around.

Speakers are placed along walls, in the ceiling and even behind the screen in order to push sound towards the audience. Up to 64 speakers can be used in a Dolby Atmos cinema, which is where the technology first appeared, and the idea is to totally envelop the audience in sound for a more immersive experience. 

MORE: Denon and Marantz confirm Dolby Atmos AV receivers

When a Dolby Atmos system is installed, the room receives a complete calibration which allows sound mixers to ‘place’ sounds and voices at exact points in the room. Each speaker in an Atmos system has its own feed, enabling many new front, surround and ceiling-mounted height channels. 

Dolby Atmos in the home

It’s unlikely that many of us will be able to have such a vast number of speakers installed around the room, especially in the ceiling, as you will find in an Atmos cinema. That’s where Onkyo, Pioneer, Denon and Marantz come in – and, we suspect, many more manufacturers will follow suit. 

MORE:  Onkyo launches Dolby Atmos amplifiers and speaker packages

Onkyo will be releasing two AV receivers, a network AV controller, two home cinema in a box packages and two speaker packages. Along with the new products, firmware updates will be released for selected current models, meaning you won’t necessarily need to go out and buy new kit.

Pioneer has confirmed it will be releasing a firmware update for its Elite range of speakers and AV receivers to allow them to support Dolby Atmos sound and Denon and Marantz have announced new receivers which will be Dolby Atmos compatible.

MORE: Pioneer readies Dolby Atmos for home cinema receivers and speakers

And you won't have to have in-ceiling speakers. Dolby’s “hardware partners” will also produce side speakers that will be able to emit sound that aims to emulate the feeling of sound coming from above your head.

Atmos can also work with existing home cinema systems. Dolby Atmos-enabled speaker modules will be available, which, when placed on top of your speakers, will allow your system to deliver Dolby Atmos sound from a compatible AV receiver.

 

More after the break

Dolby Atmos films

Plenty of films have now been produced in Dolby Atmos, the first of which was Disney Pixar’s Brave back in 2012. Other films including Pacific RimNoah and Gravity have been released in the format and the upcoming Avengers: Age of Ultron is expected to use the sound technology too.

Plenty of directors have said nice things about Atmos, too. Guillermo Del Toro said: "With Atmos, I found creatively a complete game changer.

"I think that everybody talks about 3D imaging, and Atmos is 3D sound... I truly embrace Atmos, I think that every theatre should embrace it and it’s my preferred method for mixing sound, in the world right now."

While Peter Jackson, also a fan of 3D film, said: "Dolby Atmos provides the completely immersive sound experience that filmmakers like myself have long dreamed about."

There are currently nine cinemas in the United Kingdom that are fitted with Dolby Atmos technology, including the Empire Leicester Square, London and the Showcase in Leeds. You can see a  full list of Dolby Atmos cinemas on the Dolby website.

 

Speaker Configuration

The majority of DVD, Blu-ray, HD TV and other surround sound audio sources offer a 5.1-channel soundtrack.

This means if you have a 7.1 (or more) speaker configuration, your AVR is sending the 5.1 signal to your extra speakers, a little like how a TV will upscale an SD picture to fill the pixels on an HD (or 4K) screen.

However with Dolby Atmos, there are several new speaker configurations available. These take into account whether you have ceiling speakers or Atmos-enabled front speakers or add-on speaker modules – and will hopefully be matched by content with Atmos surround sound mixes. 

For example, a 5.1.2 set-up will be a traditional 5.1 setup with either a pair of ceiling speakers or a pair of Atmos-enabled speakers, which are the '2' in 5.1.2.

Meanwhile, a 7.1.4 set-up will be a 7.1 setup with either two pairs of ceiling speakers or a pair of Atmos-enabled front speakers and a pair of Atmos-enabled surrounds. 

It's also claimed Atmos AV amps will do their best to get more from traditional surround sound set-ups and 5.1 soundtracks. We look forward to finding out.

 

Dolby Atmos content

So, you’ve got your compatible kit to get Dolby Atmos in your home, now all you need is some content to play and revel in the full-room sound experience.  

Dolby says you shouldn't need a new Blu-ray player to support Dolby Atmos as long as you have a player that fully conforms to the current Blu-ray specification. And the crucial bit: Dolby has said that compatible Dolby Atmos movies will be released later this year in both Blu-ray disc and streaming formats.

The majority of the new Atmos products are due for release in September. We’re currently reviewing the Onkyo TX-NR636 amplifier, although we'll have to wait until the Atmos firmware update is available to test that aspect of the performance.

MORE: Best Buys: Home cinema amplifiers

 

by  Max Langridge

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